Prateek Jose This Web-Shaped Orthopedic Cast Lets Itches Be Scratched While Bones HealBy Prateek JoseOctober 26, 2016 If you’ve ever worn an orthopedic cast, you know that flexibility is not their strong suit. Especially when you’re itchy. That may change thanks to Cast21 and their 3D-printed, open weave cast that lets air and water in.